html,
body {
  width: 100%;
  height: 100%;
}
* {
  margin: 0;
  padding: 0;
}
body {
  display: flex;
  flex-direction: column;
}
body #nav {
  margin: auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  height: 44px;
  background: blue;
}
body #nav .dynamicStatement {
  width: 84px;
  height: 40px;
  line-height: 32px;
  margin-left: 10px;
  text-align: center;
  color: #4294ff;
  font-size: 20px;
  font-family: PingFangSC-bold;
  border-bottom: 3px solid #aad9f7;
}
body #nav .AddDynamic {
  width: 84px;
  height: 32px;
  line-height: 32px;
  margin-right: 10px;
  text-align: center;
  border-radius: 20px 20px 20px 20px;
  background-color: #aad9f7;
  color: #005177;
  font-size: 14px;
}
body #content {
  flex: 1;
  overflow: scroll;
}
body #content #substance {
  width: 95%;
  margin: auto;
  display: flex;
  flex-direction: column;
}
body #content #substance .recommend {
  margin: 5px 0 10px 10px;
  width: 72px;
  height: 25px;
  color: #101010;
  font-size: 18px;
  text-align: left;
  font-family: PingFangSC-regular;
}
body #content #substance .chocolate {
  width: 100%;
  height: 210px;
  background: #f60;
  margin-bottom: 20px;
  border-radius: 15px;
  border: 1px solid #ccc;
  overflow: hidden;
}
body #content #substance .chocolate .vd {
  width: auto;
  height: 150px;
  background: url(../../assets/imgs/course-img04.jpg) no-repeat center;
  background-size: 100%;
}
body #content #substance .chocolate .chotext1 {
  margin-left: 20px;
  color: #101010;
  font-size: 16px;
  text-align: left;
  font-family: PingFangSC-regular;
}
body #content #substance .chocolate .chotext2 {
  margin: 5px 0 0 20px;
  font-size: 12px;
  color: #9a9a9a;
}
body #content #substance #user {
  width: 100%;
  height: 452px;
  display: flex;
  flex-direction: column;
  border-bottom: 10px solid #ccc;
}
body #content #substance #user .UserAvatar {
  display: flex;
  width: 100%;
  height: 60px;
}
body #content #substance #user .UserAvatar .ava {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  border: 1px solid #f60;
}
body #content #substance #user .UserAvatar .username {
  margin: 10px 0 0 15px;
}
body #content #substance #user .usertext {
  width: auto;
  height: 59px;
  text-align: center;
  font-size: 14px;
  margin-top: 10px;
}
body #content #substance #user .picture {
  margin-top: 10px;
  width: 100%;
  height: 226px;
  display: flex;
  justify-content: space-between;
  align-content: space-between;
  flex-wrap: wrap;
}
body #content #substance #user .picture div {
  width: 118px;
  height: 48%;
  background: #ccc;
}
footer {
  display: flex;
  justify-content: space-between;
  align-content: center;
  width: 100%;
  height: 77px;
}
footer .icon {
  width: 20%;
  text-align: center;
}
footer .iconfont {
  font-size: 30px;
}
footer div {
  font-size: 16px;
}
.show {
  display: block;
}
.active {
  color: skyblue;
}
